[libvirt] [PATCHv4 03/29] qemu: Add helper to initialize storage file backend with correct uid/gid

[Peter Krempa]

Add a wrapper that determines the correct uid and gid for a certain
storage file and domain.
---
 src/qemu/qemu_domain.c | 23 +++++++++++++++++++++++
 src/qemu/qemu_domain.h |  4 ++++
 2 files changed, 27 insertions(+)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 37b28ab..cecb7c4 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -2430,6 +2430,29 @@ qemuDomainGetImageIds(virQEMUDriverConfigPtr cfg,


 int
+qemuDomainStorageFileInit(virQEMUDriverPtr driver,
+                          virDomainObjPtr vm,
+                          virStorageSourcePtr src)
+{
+    virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
+    uid_t uid;
+    gid_t gid;
+    int ret = -1;
+
+    qemuDomainGetImageIds(cfg, vm, src, &uid, &gid);
+
+    if (virStorageFileInitAs(src, uid, gid) < 0)
+        goto cleanup;
+
+    ret = 0;
+
+ cleanup:
+    virObjectUnref(cfg);
+    return ret;
+}
+
+
+int
 qemuDomainDetermineDiskChain(virQEMUDriverPtr driver,
                              virDomainObjPtr vm,
                              virDomainDiskDefPtr disk,
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 3bda446..67972b9 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -353,6 +353,10 @@ int qemuDomainDetermineDiskChain(virQEMUDriverPtr driver,
                                  virDomainDiskDefPtr disk,
                                  bool force);

+int qemuDomainStorageFileInit(virQEMUDriverPtr driver,
+                              virDomainObjPtr vm,
+                              virStorageSourcePtr src);
+
 int qemuDomainCleanupAdd(virDomainObjPtr vm,
                          qemuDomainCleanupCallback cb);
 void qemuDomainCleanupRemove(virDomainObjPtr vm,
-- 
1.9.3

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